duck-critic SKILL.md skillA
duck-critic from aktsmm/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add aktsmm/agent-skills/duck-critic@git:20261022.ceb204aPins git:20261022.ceb204a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- aktsmm/agent-skills
- Path
duck-critic/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261022.ceb204a, committed Oct 22, 2026
- First version recorded
- Aug 12, 2026
- Size
- 14,062 bytes
- Repository stars
- 26
- License
- a license file GitHub does not identify
Run a Duck Critic producer-critic loop: you (main) keep producing the plan/code/tests and gate your own work at checkpoints with a different-model critic, revising until it passes. Use when asked for rubber duck, ラバーダック, 別モデルレビュー, second opinion, critic, or a different-model code review, design review, plan critique, or review by another model/agent harness. Not for readability refactoring or code cleanup alone.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Duck Critic Run a producer-critic loop, the way the native Rubber Duck works: you keep producing the work and gate it at checkpoints with a second-opinion critic, then revise until the critic passes. Keep ownership of the plan, implementation, and tests. At a checkpoint, send the current artifact to an authorized read-only critic, reconcile its findings, and continue. Honor the user's chosen host or route; prefer native Rubber Duck only when available there, otherwise use a supported reviewer or separate model session. ## When to Use - Use when the user asks for `rubber duck`, `ラバーダック`, `second opinion`, `別モデルレビュー`, critic review, plan critique, code review, design review, test review, or another-model review. - Use when the user says "rubber duck で実装して" / "ラバーダックで作って": you implement it yourself and gate your own checkpoints with the critic. Do not delegate the whole implementation to a subagent. - Use before nontrivial implementation, after drafting tests, before architecture/deployment decisions, or after repeated failures. …
Read the whole file at its exact version.
How to install
mdr add aktsmm/agent-skills/duck-critic@sha256:2a5ee2b475a6856dThe line at the top of this page pins the label git:20261022.ceb204a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_k5revzcxqrs4xtaw)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Aug 12, 2026 and Oct 22, 2026, about one every 12 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261022.ceb204a latest | 2026-10-22 | ceb204a | 14,062 B | A | view · diff |
| git:20261004.e1c4ed1 | 2026-10-04 | e1c4ed1 | 13,933 B | A | view · diff |
| git:20260905.e63d714 | 2026-09-05 | e63d714 | 13,857 B | A | view · diff |
| git:20260826.1d65cbc | 2026-08-26 | 1d65cbc | 13,609 B | A | view · diff |
| git:20260819.771aa96 | 2026-08-19 | 771aa96 | 13,208 B | A | view · diff |
| git:20260815.43d0f91 | 2026-08-15 | 43d0f91 | 13,033 B | A | view · diff |
| git:20260812.e5cdf44 | 2026-08-12 | e5cdf44 | 12,266 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (14062 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
aktsmm/agent-skills · 26 stars · license a license file GitHub does not identify · pushed 2026-11-04 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_k5revzcxqrs4xtaw GET https://markdownregistry.com/api/v1/resolve?ref=aktsmm/agent-skills/duck-critic GET https://markdownregistry.com/api/v1/blob/2a5ee2b475a6856d268e9e0faa0e0ce21b1c2ba99eee60de83b608e8082b9e89
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.